12643723 has 2 divisors, whose sum is σ = 12643724. Its totient is φ = 12643722.

The previous prime is 12643717. The next prime is 12643781. The reversal of 12643723 is 32734621.

12643723 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12643723 - 2¹³ = 12635531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12643691 and 12643700.

It is not a weakly prime, because it can be changed into another prime (12643783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321861 + 6321862.

It is an arithmetic number, because the mean of its divisors is an integer number (6321862).

Almost surely, 2^12643723 is an apocalyptic number.

12643723 is a deficient number, since it is larger than the sum of its proper divisors (1).

12643723 is an equidigital number, since it uses as much as digits as its factorization.

12643723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 28.

The square root of 12643723 is about 3555.8013161593. The cubic root of 12643723 is about 232.9655250558.

It can be divided in two parts, 12643 and 723, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 12643723 in words is "twelve million, six hundred forty-three thousand, seven hundred twenty-three".